The gui doesn't appear when pressing e?

-- Local script in starterpack
local debounce = false
local name = "Dave"
local message = "Hey man, what's up?"
local dist = 7

local player = game.Players.LocalPlayer
local char = player.Character or player.CharacterAdded:Wait()

local interact = game.ReplicatedStorage.Interact

while true do
	for i, npc in pairs(workspace.NPCs:GetChildren()) do
		if (char:WaitForChild("HumanoidRootPart").CFrame.p - npc.HumanoidRootPart.CFrame.p).magnitude <= dist then
			game.ReplicatedStorage.Remotes.StartDialog:FireServer(name, message, npc, dist)		
		end
	end
	
	wait(1)
end

-- Script inside serverscriptservice
local uis = game:GetService("UserInputService")
local debounce = false
local interact = game.ReplicatedStorage.Interact
local dialog = game.ServerStorage.Dialog

game.ReplicatedStorage.Remotes.StartDialog.OnServerEvent:Connect(function(player, name, message, npc, dist)
	local playerGui = player:WaitForChild("PlayerGui")
	local char = player.Character or player.CharacterAdded:Wait()
	local hum = char:WaitForChild("Humanoid")
	
	if (char:WaitForChild("HumanoidRootPart").CFrame.p - npc.HumanoidRootPart.CFrame.p).magnitude <= dist then
		interact.Parent = playerGui
	
		uis.InputBegan:Connect(function(input)
			if input.KeyCode == Enum.KeyCode.E and not debounce and interact.Parent == playerGui then
				debounce = true
				
				print("pressed e")
				dialog.Parent = playerGui
				hum.WalkSpeed = 0
				hum.JumpPower = 0
				
				wait(1)
				debounce = false
			end
		end)
	else
		interact.Parent = game.ReplicatedStorage
	end
end)

This is my dialog system. The interact gui appears when needed, but the dialog gui doesn't appear when I press e. What can I do to fix this?

ofc it doesn't work cause you're using the "UserInputService" inside a script, tho it can only be used in a local script since it's client-sided...

i try to fix it

-- Script inside serverscriptservice
local debounce = false
local interact = game.ReplicatedStorage.Interact
local dialog = game.ServerStorage.Dialog

game.ReplicatedStorage.Remotes.StartDialog.OnServerEvent:Connect(function(player, name, message, npc, dist)
    local playerGui = player:WaitForChild("PlayerGui")
    local char = player.Character or player.CharacterAdded:Wait()
    local hum = char:WaitForChild("Humanoid")

    if (char:WaitForChild("HumanoidRootPart").CFrame.p - npc.HumanoidRootPart.CFrame.p).magnitude <= dist then
        interact.Parent = playerGui

        uis.InputBegan:Connect(function(input)
            if input.KeyCode == Enum.KeyCode.E and debounce == false and interact.Parent == PlayerGui then
                debounce = true

                print("pressed e")
                dialog.Parent = PlayerGui
                hum.WalkSpeed = 0
                hum.JumpPower = 0

                wait(1)
                debounce = false
            end
        end)
    else
        interact.Parent = game.ReplicatedStorage
    end
end)

Always watch the capitals, and keep a small space between of lines The Fixed script

-- Script inside serverscriptservice
local debounce = false
local interact = game.ReplicatedStorage.Interact
local dialog = game.ServerStorage.Dialog

game.ReplicatedStorage.Remotes.StartDialog.OnServerEvent:Connect(function(player, name, message, npc, dist)
    local getKeyboard = player:GetMouse()
    local playerGui = player:WaitForChild("PlayerGui")
    local char = player.Character or player.CharacterAdded:Wait()
    local hum = char:WaitForChild("Humanoid")

    if (char:WaitForChild("HumanoidRootPart").CFrame.p - npc.HumanoidRootPart.CFrame.p).magnitude <= dist then
        interact.Parent = playerGui

         getKeyboard.KeyDown:Connect(function(input)
            if input == "e" and debounce == false and interact.Parent == playerGui then
                debounce = true

                print("pressed e")
                dialog.Parent = playerGui
                hum.WalkSpeed = 0
                hum.JumpPower = 0

                wait(1)
                debounce = false
            end
        end)
    else
        interact.Parent = game.ReplicatedStorage
    end
end)